The effect of phosphate on the bioaccumulation and biotransformation of arsenic(V) by the marine alga Fucus gardneri.
The phosphate concn. was varied to ascertain if the prodn. of arsenosugars by Fucus could be stimulated by a deficit of phosphate, which would encourage the uptake of arsenate, or by an excess of phosphate which would possibly increase metab. The results indicate that with a low phosphate concn. arsenate uptake is enhanced and as a result the concn. of the usual metabolites arsenite and dimethylarsenic acid are increased in the Fucus and the seawater.
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